package com.bdqn.base.exception;

import com.bdqn.base.R;
import lombok.extern.slf4j.Slf4j;
import org.springframework.http.HttpStatus;
import org.springframework.validation.BindException;
import org.springframework.validation.FieldError;
import org.springframework.web.bind.MethodArgumentNotValidException;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseStatus;
import org.springframework.web.bind.annotation.RestControllerAdvice;

import java.util.List;

/**
 * 全局的异常处理器
 *
 * @author lilibo
 * @date 2019/8/26
 */
@Slf4j
@RestControllerAdvice
public class GlobalExceptionHandler {

    /**
     * 全局异常
     *
     * @param e Exception
     * @return R
     */
    @ExceptionHandler(Exception.class)
    @ResponseStatus(HttpStatus.INTERNAL_SERVER_ERROR)
    public R exception(Exception e) {
        log.error("GlobalException EX={}", e.getMessage(), e);
        return new R<>(e);
    }

    /**
     * 验证异常
     *
     * @param e Exception
     * @return R
     */
    @ExceptionHandler({MethodArgumentNotValidException.class, BindException.class})
    @ResponseStatus(HttpStatus.BAD_REQUEST)
    public R bodyValidExceptionHandler(MethodArgumentNotValidException e) {
        List<FieldError> fieldErrors = e.getBindingResult().getFieldErrors();
        R result = new R();
        result.setMsg(fieldErrors.get(0).getDefaultMessage());
        log.warn(fieldErrors.get(0).getDefaultMessage());
        return result;
    }

}
